A. Gibbs-Duhem
B. Maxwell’s
C. Clapeyron
D. None of these
Related Mcqs:
- For multi-component multiple phases to be in equilibrium at the same pressure and temperature, the _______________ of each component must be same in all phases?
A. Chemical potential
B. Fugacity
C. Both A. and B
D. Neither A. nor B - When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is__________________?
A. More in vapour phase
B. More in liquid phase
C. Same in both the phases
D. Replaced by chemical potential which is more in vapour phase - The equation, (d loge PA/d loge xA) = (d loge PA/d loge xB) applicable to a binary solution of components. A and B in equilibrium with their vapors at constant temperature and pressure is called the _____________ equation?
A. Van Laar
B. Margules
C. Gibbs-Duhem
D. Gibbs-Duhem-Margules - The equation relating E, P, V and T which is true for all substances under all conditions is given by (∂E/∂V)T = T(∂P/∂T)H – P. This equation is called the ___________________?
A. Maxwell’s equation
B. Thermodynamic equation of state
C. Equation of state
D. Redlich-Kwong equation of state - Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial pressure of B is 10-3 atm and the partial pressure of AB is 1 atm, the equilibrium constant ‘K’ is____________________?
A. 10 atm-1
B. 105 atm-1
C. 10 (dimensionless)
D. 105 (dimensionless) - The variation of heat of reaction with temperature at constant pressure is given by the ____________ law?
A. Kelvin’s
B. Antoine’s
C. Kirchoff’s
D. None of these - The reaction A (l) → R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The numbers of degrees of freedom are ?
A. 1
B. 2
C. 3
D. 0 - “When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change.” This is called the_______________?
A. Le-Chatelier principle
B. Kopp’s rule
C. Law of corresponding state
D. Arrhenius hypothesis - Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be___________________?
A. Same
B. Doubled
C. Halved
D. One fourth of its original value - At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) ?
A. μ° + RT ln f
B. μ°+ R ln f
C. μ° + T ln f
D. μ° + R/T ln f
